Chemistry The percentage of Nitrogen in Air is 78.03 85.02 0.03 0.94 78.03 85.02 0.03 0.94 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Conduction band electrons have more mobility than holes because they Have negative charge Are lighter Need less energy to move them Experience collision less frequently Have negative charge Are lighter Need less energy to move them Experience collision less frequently ANSWER DOWNLOAD EXAMIANS APP
Chemistry Bauxite is used as raw material by which industry ? Gold Aluminium Iron Steel Gold Aluminium Iron Steel ANSWER DOWNLOAD EXAMIANS APP
Chemistry The greenhouse effect is caused by the higher level of which gas in the atmosphere ? Carbon dioxide Sulphur dioxide Carbon monoxide Nitrous oxide Carbon dioxide Sulphur dioxide Carbon monoxide Nitrous oxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry What particles move around the nucleus of an atom and are negatively charged? Electrons Positrons Neutrons Protons Electrons Positrons Neutrons Protons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Hard steel contains 0.1 to 0.4 per cent carbon 0.5 to 1.5 per cent carbon 0.01 to 0.04 per cent carbon 2 to 5 per cent carbon 0.1 to 0.4 per cent carbon 0.5 to 1.5 per cent carbon 0.01 to 0.04 per cent carbon 2 to 5 per cent carbon ANSWER DOWNLOAD EXAMIANS APP
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